JEE Advanced | 2018Work, Power and EnergyHard
Question
A particle of mass m is initially at rest at the origin. It is subjected to a force and starts moving along the x-axis. Its kinetic energy K changes with time as dK/dt = t, where is a positive constant of appropriate dimensions. Which of the following statements is (are) true ?
Options
A.
The force applied on the particle is constant
B.
The speed of the particle is proportional to time
C.
The distance of the particle from the origin increses linerarly with time
D.
The force is conservative
More Work, Power and Energy Questions
A block of mass m = 0.1 kg is connected to a spring of unknown spring constant k. It is compressed to adistance x from r...A spring of spring constant 5 × 103 N/m is stretched initially by 5 cm from the unstretched position. Then the work...CO2(O-C-O) is a triatomic gas. Mean kinetic energy of one gram gas will be (If N-Avogadro′s number, k-Boltzmann...A ball loses 15.0% of its kinetic energy when it bounces back from a concreate wall. With what speed you must throe it v...If the length of a heater wire of 1000W, 220V is reduced by 20% then the power consumption will be...